The Chinese company Meizu announced wireless Lifeme W21 headphones, which are suitable for people who engage in sports or fitness, and the new one is already available at an estimated cost of $23.
The device is designed as a necklace: a wire link is provided between the submersible modules for the left ear and the right ear. 10 mm transmitters are used to provide a range of reproducible frequencies from 20 Hz to 20 kHz.
The data exchange with the smartphone is the responsibility of the Bluetooth controller. 5.2 The declared time of autonomous operation per charge of the 170 mAh battery is 22 hours. Charging is done through the USB Type-C separation: it takes approximately one and a half hours to complete the energy reserve.
Lifeme W21 headphones are protected from moisture and dust in IPX4. A sound-backing system during telephone calls has been implemented. With the accompanying Lifeme App mobile application, it is possible to set an evaliser, view the battery's charge level, and so on.